Configuration up to version 3.8.0 was via the vino-preferences program. This was removed from the packages after that version, since the gnome-control-center could then be used alternatively to control settings.
However - Vino is also useful in some other Linux distributions, which may not use gnome desktop; and where gnome-control-center is not present: this leaves those distributions with no preference-editor. For these distributions, (Lubuntu is one example, being based on LXDE not Gnome), the alternative configuration manager tool dconf-editor is recommended (sudo apt-get install dconf-editor to install). The VNC settings can then be accessed under `org -> gnome -> desktop -> remote-access` using that tool.
